Lubricating device for engines.



No. 644,l49. Patented Feb 27 I900 c.- E. SABGENT.

LUBRICATING DEVICE FOR ENGINES.

v (Application filed. Nov. 1, 1899.) (No Model.)

2 Sheets-Sheet 1,

m: NORRIS PEYERS cu, Fnomumou WASHINGTON, n. o.

No. e44,|49.

LUBRICATING DEVICE FOR ENGINES.

(Application filed Nov. 1, 1899.)

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CHARLES E. SARGENT, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 644,149, dated February27, 1900.

Application filed November 1, 1899. Serial No. 735,474. (No model.)

To a whom it may concern.-

Be it known that I, CHARLES E. SARGENT, a citizen of the United Statesof America, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inLubricating Devices for Engines, of which the following is aspecification.

My invention relates to a certain class of engines, mostly of theinternal-combustion type, in which the valves are operated from thedriving-shaft by certain interposed gears adapted to communicate motionto the valves by means of a connecting-shaft, the object of the gearsbeing to control the motion of said shaft and also the direction of thesame.

The object of the invention is to utilize the said gears to maintain aconstant circulation of oil through the working parts and bearings ofthe engine, using the same oil over and over again and keeping aconstant supply at the points where it is needed.

To such end the invention consists in certain novel features, adescription of which will be found in the following specification andthe essential features more definitely pointed out in the claims.

The invention is illustrated in the drawings furnished herewith by meansof six figures, of which- Figure 1 is a side elevation of an engine withcertain portions broken away to illustrate other more importantportions. Fig. 2 is a vertical cross-section in line 2 2 of Fig. 3. Fig.3 is a vertical cross-section in line 3 3 of Fig. 1. Fig. 4 is a detaillongitudinal section in line 4 4: of Fig. 3. Fig. 5 is a verticalcrosssection of a portion of the frame of the ma-. chine, the line ofsection being indicated at line 5 5 in Fig. 4; and Fig. 6 is ahorizontal section in line 6 6 of Fig. 4.

Referring to the drawings, A represents the bed of the engine, and A thecylinder, which is provided with the ordinary valves used in engines ofthis class. The main driving-shaft B is journaled in bearings a a,provided with caps a a, and carries upon its ends fly-wheels B B At itsmiddle portion it has a preferably integral double crank b, on which ispivoted the connecting-rod O, the latter being secured to the piston inthe ordinary manner. The valves are operated by a shaft D, journaled inbokes (Z 07, secured to the bed of the machine and carrying upon one enda spiral gear-wheel E in mesh witha second spiral gear-wheel F, securedto the main driving-shaft B.

The bed of the machine is formed with a socket a in which one half ofthe gear E lies, and a cap G is bolted to the frame, as seen in Figs. 1and 5, to inclose the other half of said gear. The latter runs inBabbitt metal 0, which is poured into the socket a to make a perfect fitbetween the gear and the surrounding walls. The Babbitt metal ispreferably run in after the blank gear has been trued up, but before theteeth have been'cut in same, the gear having been mounted upon the shaftand fitted to its place in the socket. This makes a perfectly-smoothbearing between the outer peripheries of the teeth and the surface ofthe Babbitt metal, which is quite essential to the perfect operation ofthe device. The cap G extends upward and also incloses the greaterportion of the gear F, as seen at G. (See Fig. 1.)

The bed of the machine is preferably so constructed as to form areservoir or tank in which a quantity of lubricant may be stored at aconvenient point. This tank is shown at X in the drawings and shouldpreferably be located as near the parts of the engine which use the mostoil as possible. Looking at Fig. 3, it will be seen that openings a areformed in the wall of the socket a and in the Babbitt metal to permitthe oil to flow into the chamber occupied by the gear E. At the top ofthis chamber is formed a second opening a communicating with a pipe H,which may extend to any of the parts of the machine which requireoiling. The pipe in the drawings is shown as having a branch H, runningto the cross-head of the engine, and branches H H extending to thebearings of the main driving-shaft B. In Fig. 2 it will be seen that thebranch H connects with a port If' in the frame, which extends to theshaft B. The branch H is similarly connected to the shaft B. The shaftis preferably formed with ribs b 6 running in grooves a a The groove ais formed in a bossf, the gear F and the groove 0. in the bearing a, theobject of the same being to prevent the flowing of oil out upon theshaft beyond formed in the upper portion G of the cap,

said rib f being adapted to stop any flow of oil which may escape fromthe chamber in which the gear F travels. An aperture f in the collar fof the gear F communicates with the channel g and allows the oil to flowfrom, An aperture g is formed in the cap G and communicates the shaft/Binto said channel g.

with the interior of the bed of the machine through a pipe g (see Fig.1,) conveying the oil whichcollects in the channel g to the reservoir X.The capa is formed with aihood (L (see Figs. t and 5,) which, togetherwith the upper portion G of the cap G, completely incloses the gear Fand prevents any oil from getting out of the engine at this point.

The oil in the reservoir X flows bygravity through openings (1L3 intothe socket a and fills the spaces in the teeth of the gearE. As thesepass upward from theopenings a the oil becomes penned in betweenthesides of the gear and walls of the socket until it reaches the gearF. As the teeth of the latter advance in the gear-wheel E they force theoil out from between the teeth of the latter through the port a, fromwhich it passes to the pipe 11 and thence to the various parts of theengine throughthe connecting-pipes -be-1 fore described. After it hasperformed its work in lubricating said parts it flows by gravity back tothe reservoir andcools-oif for; another round. v

The valve of the invention hereinidisclosedi will be recognized when itis considered, first, that the seriesof gearsbetween themaindriving-shaft and the valve-operatin g shaft are a I common anddesirable featureof engines of this class; second, that said gearsshould run inoil for their own lubrication, and, third, that devicesshould be provided for maintaining a constant circulation of oil throughthe said gears and also through the other working parts of the engine.All of these desirable features are attained by the simple expedient ofbabbittin g a portion of the gear-casing and providingconnecting-passages between the gears and the reservoir, the gears andthe working parts, and the workin g parts and the reservoir.

I claim as new and desire to secure by Letters Patent-- 1. Thecombination, in an engine of the class described, of a frame, acylindcr,suitable valves, a main driving-shaft, a piston connected therewith, avalve-operatin g shaft, a series of gears between the driving-shaft andthe valve-operating shaft, a reservoir located below the workingparts, apassage leading from the reservoir to oneof said gears, passages leadingfrom another point of said gear to the working parts of the engine,passages leading from said workingparts to the reservoir and anapproximately oil-tight casing about the said gear, whereby the sameoperates both to pump the oil from the reservoir to the working partsand to operate the valves; substantially asdescribed.

2. In an-engine and in combination with the working parts thereof, areservoir below said working parts and connected therewith by suitablepassages, a babbitted casing having an inlet and an outletport, apassageconnectin g the inlet-port with the reservoir, passages connecting theoutlet-port with the working parts of the engine, a gear in the casing,a secondgear in mesh with the first and connections between said gearsand the working parts of the engine ford rivingthegears; substantiallyas described.

In witness whereof I havcihereunto setmy hand, at Chicago, in the countyof Cook and State of Illinois, this 28th day 0fOGl10l)Ol,A. D. 1899.

CHARLES E. SARGEN'l.

\Vitnesses:

CHAS. O. Snunvn-v, S. Brass.

